Commit 017c4c3b authored Sep 29, 2012 by Hauke Mehrtens Committed by John W. Linville Oct 19, 2012

bcma: use fallback sprom if sprom on card was not valid

Sometimes the PCIe card indicates that it has a sprom somewhere and we
are able to read the memory region, but it is empty and not valid. In
these cases we should try to use the fallback sprom as a last chance.

This is the case for the PCIe cards in my ASUS RT-N66U (BCM4706 + 2
times BCM4331) and I have heard of someone having the same problem with
an other PCIe card connected to an other Broadcom SoC.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent d954162c

drivers/bcma/sprom.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -595,8 +595,11 @@ int bcma_sprom_get(struct bcma_bus *bus)
		bcma_chipco_bcm4331_ext_pa_lines_ctl(&bus->drv_cc, true);

		err = bcma_sprom_valid(sprom);
		if (err)
		if (err) {
		bcma_warn(bus, "invalid sprom read from the PCIe card, try to use fallback sprom\n");
		err = bcma_fill_sprom_with_fallback(bus, &bus->sprom);
		goto out;
		}

		bcma_sprom_extract_r8(bus, sprom);